Here is another example of cross cultural adaptation.  The Talking Wormhole Drum combines features of both the talking drum and the hourglass drum of Africa.  Like both of these drums, the Wormhole Drum is actually two connected drums: the wooden shells of its African counterparts have been replaced by coffee cans attached to plastic dryer vents.  The animal skin drum heads have been replaced by heat shrink plastic (see Confetti Conga Drum), and two pieces of 1/2" flexible PVC pipe have been substituted for the traditional strings that are tied between the two stretched animal skin drum heads.  When playing Talking Wormhole Drum, the pitch can be changed by squeezing the PVC pipes (just as pulling the strings together on an hourglass drum changes its pitch).

The coffee cans are painted in a black on white and white on black paint scheme and connected by three inch diameter flexible plastic dryer vent tubing.  The cans and tubing represent black hole/white hole mirror image opposites joined together to form a wormhole through which sound can escape without the crushing finality of a dreaded singularity of tone.